3v4l.org

run code in 300+ PHP versions simultaneously
<?php function gen2() { yield from "key" => [1, 2, 3]; }
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.14
Parse error: syntax error, unexpected '"key"' (T_CONSTANT_ENCAPSED_STRING) in /in/t3gX6 on line 4
Process exited with code 255.
Output for 5.4.2 - 5.4.45
Parse error: syntax error, unexpected 'from' (T_STRING) in /in/t3gX6 on line 4
Process exited with code 255.
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177.95 ms | 1399 KiB | 64 Q